When cold-booting the ldoio0/1 regulators are always off / the
gpios are always at tristate. But when re-booting from android these
are sometimes on. Disable them at axp_init time (iow as early as possible)
to remove this difference between a cold boot and a reboot.
Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
Changes in v2:
-Do not or pmic_bus_write results together
---
drivers/power/axp209.c | 16 ++++++++++++++++
drivers/power/axp221.c | 12 ++++++++++++
2 files changed, 28 insertions(+)
diff --git a/drivers/power/axp209.c b/drivers/power/axp209.c
index fc162a1..731b75e 100644
--- a/drivers/power/axp209.c
+++ b/drivers/power/axp209.c
@@ -167,6 +167,22 @@ int axp_init(void)
return rc;
}
+ /*
+ * Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
+ * from android these are sometimes on.
+ */
+ rc = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (rc)
+ return rc;
+
+ rc = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (rc)
+ return rc;
+
+ rc = pmic_bus_write(AXP_GPIO2_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (rc)
+ return rc;
+
return 0;
}
diff --git a/drivers/power/axp221.c b/drivers/power/axp221.c
index 727ab09..109d3f4 100644
--- a/drivers/power/axp221.c
+++ b/drivers/power/axp221.c
@@ -223,6 +223,18 @@ int axp_init(void)
if (!(axp_chip_id == 0x6 || axp_chip_id == 0x7 || axp_chip_id == 0x17))
return -ENODEV;
+ /*
+ * Turn off LDOIO regulators / tri-state GPIO pins, when rebooting
+ * from android these are sometimes on.
+ */
+ ret = pmic_bus_write(AXP_GPIO0_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (ret)
+ return ret;
+
+ ret = pmic_bus_write(AXP_GPIO1_CTRL, AXP_GPIO_CTRL_INPUT);
+ if (ret)
+ return ret;
+
return 0;
}
--
2.9.3
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